The new version has input mapping. Press F8.I know there's content, I played this game about 2 years ago. It's just a lot of work and clicking the mouse and trying to navigate with a non-configurable layout (have to use my thumb to move forward).
Yeah if you played 2 years ago, then I'm sure you ran into story bugs back then, but the newer builds have been pretty solid in that regard. If you can't progress, you're most likely missing a step.